Dr Jonathan Katz
MBBChir MD FRCP
Live bookings available
35 years of experience
Bushey, WD23 1RD
(+3 more)
52 connections in healthcare
Skill endorsed
by Dr. Yahya Mahgoub, Dr Akeel Alisa and 6 other professionals
Live bookings available
35 years of experience
Bushey, WD23 1RD
(+3 more)
52 connections in healthcare
Skill endorsed
by Dr. Yahya Mahgoub, Dr Akeel Alisa and 6 other professionals
Areas of expertise
Contact
Book online
About Dr Jonathan Katz
Dr Jonathan Katz is a Consultant in Diabetes & Endocrinology, based at Barnet Hospital, which is part of the The Royal Free London NHS Trust. He has over 30 years experience in treating patients with Thyroid problems, Pituitary disorders, Diabetes and other hormone imbalances including Calcium disorders, Menopause, Testosterone Deficiency and Addison's Disease.
Dr Katz studied medicine at Cambridge University and University College London, qualifying in 1991. He specialised in Endocrinology, completing registrar training at UCLH, the Whittington Hospital and the Royal Free Hospital. During higher training he undertook a two year research fellowship for his MD thesis on polycystic ovary syndrome. Following that, he worked for 1 year as a registrar in Sydney, Australia before returning to teh Royal Free Hospital for his final resgistrar year. Dr Katz was appointed as a Consultant in Diabetes and Endocrinology in 2002.
Dr Katz works as a Consultant Endocrinologist for the Royal Free London NHS Foundation Trust, based at Barnet Hospital. In 2009, he was elected as a Fellow of the Royal College of Physicians (FRCP), an honour granted to consultants providing the highest standards of care. In 2019, Dr Katz was appointed as Regional Advisor for the Royal College of Physicians – this is an elected post with wider responsibilities : supporting training, ensuring new consultant posts fulfil Royal College standards, chairing regional conference updates for physicians and appointing College Tutors.
Dr Katz has a busy NHS Endocrinology practice, seeing over 300 new patients and over 1000 follow-up patients each year. In addition, he looks after inpatients at Barnet Hospital with diabetes emergencies and acute endocrine disorders.
Subspecialties
- Diabetes
- Endocrinology
Areas of expertise
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Registered with
General Medical Council
No. 3490022
Education
University of Cambridge
Medicine
Graduated 1991
Qualifications
- MB BChir - Cambridge University 1991
- MD - University of London 2001
- FRCP - Royal College of Physicians 2009
Languages spoken
- English
Insurers
- General and Medical
- Freedom Health Insurance
- The Exeter
- Simply Health (Dental)
- Healix Health Services
- Cigna
- Bupa
- WPA
- Allianz Worldwide Care
- AXA Health
- Aviva Health
- Vitality
- The PHC
- Benenden Health
Fees
New appointment
£295Follow-up appointment
£195
Locations
Spire Bushey Hospital
Heathbourne Road, Bushey, United Kingdom, WD23 1RD
Opening hours
Facilities
Opening hours
Facilities
The Kings Oak Hospital (part of Circle Health Group)
Chase Farm, Enfield, United Kingdom, EN28SD
Opening hours
Facilities
The Cavell Hospital (part of Circle Health Group)
Cavell Drive, Uplands Park Rd, Enfield, London, United Kingdom, EN2 7PR
Opening hours
Facilities
Spire Bushey Diagnostic Centre
290 Centennial Ave, Elstree Borehamwood, London, United Kingdom, WD6 3SU
Opening hours
Facilities
Areas of expertise
Contact
Book online
Reviews
AI Review Summary
This summary was created by AI based on recent reviews
Dr Jonathan Katz is a knowledgeable and professional specialist who ensures patients feel listened to and fully understand their treatment. He provides clear explanations, taking time to address individual needs and concerns without rushing consultations. Patients commend his methodical approach to diagnosis, comprehensive follow-up care, and effective coordination with other medical teams. Patient feedback highlights his significant expertise in managing thyroid conditions and regulating blood glucose.
The second consultation went well. There are little steps in progress being made for which I am very grateful.
Dr Katz goes above and beyond for his patients. He is calm and supportive and I have 100% faith in his expertise. He is very helpful and I couldn’t recommend him highly enough.
My appointments with Dr. Katz are always professional and filled with care, kindness and a wealth of experience. He will always extend himself to ensure that solutions are reached to every problem presented to him.
Dr Katz has been excellent throughout my ongoing diagnosis and treatment. He is extremely thorough, knowledgeable and takes the time to really listen and explain things clearly. His attention to detail and nuance is second to none. I also really appreciated his follow-up calls and emails, and his genuine dedication to my treatment. I feel totally reassured under his care and guidance, and would highly recommend him.
I felt I was listened to and that there is a solution to the problem I have had.
I went to see Dr Katz for a private consultation after I was referred through my NHS GP, but was still waiting for an NHS consultation after 6 months with no appointment. He was very polite, patient and listened to my history without interrupting. He took his time with his investigation and we sat and discussed options. He gave a diagnosis and treatment advice. He was aware that I was self funding and gave suggestions regarding the most economical way of moving forward. Overall a very positive experience and I would definitely recommend.
Consultant was very patient and informative. Maintains a person centred approach to his practice which is very positive. I am happy with the service provided and wish to continue receiving such support.
Skill Endorsements
DM
Dr. Yahya Mahgoub
Diabetes & Endocrinology SpecialistA remarkable colleague with excellent skills and knowledge. Much admired and appreciated by patients and families
20 Aug 2026
Dr Akeel Alisa
GastroenterologistDr Katz is an excellent and knowledgeable endocrinologist who I have known for many years. I would not hesitate to recommend him
03 Jun 2026
Dr Melanie Romain
Geriatric DoctorI have known Dr Katz for many years and can say with confidence that he is a skilled, trustworthy endocrinologist
19 May 2026DK
Dr Felicity Kaplan
Diabetes & Endocrinology Specialist
Get to know Dr Jonathan Katz
Find out more on the Doctify Health hub for Dr Jonathan Katz's specialty, Endocrinology & Diabetes.
FAQ
What are Dr Jonathan Katz's reviews like?
Dr Jonathan Katz's overall patient rating is 5 out of 5 stars on Doctify. This is based on 58 reviews.
What languages does Dr Jonathan Katz speak?
Dr Jonathan Katz speaks English
Where is Dr Jonathan Katz located?
Dr Jonathan Katz primarily practices at Spire Bushey Hospital, located at Heathbourne Road, Bushey, United Kingdom, WD23 1RD
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What are Dr Jonathan Katz working hours?
Dr Jonathan Katz is working Wednesday (16:00 - 18:00), Thursday (15:00 - 17:00)
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Does Dr Jonathan Katz accept new patients?
Dr Jonathan Katz generally accepts new patients.
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